--- a/hotspot/src/share/vm/classfile/systemDictionary.cpp	Fri Mar 24 16:35:37 2017 +0100
+++ b/hotspot/src/share/vm/classfile/systemDictionary.cpp	Tue Apr 18 13:19:42 2017 -0400
@@ -1292,7 +1292,7 @@
           pkg_entry == NULL ||
           pkg_entry->in_unnamed_module()) {
         assert(mod_entry == NULL ||
-               mod_entry == loader_data->modules()->unnamed_module(),
+               mod_entry == loader_data->unnamed_module(),
                "the unnamed module is not defined in the classloader");
         return true;
       }